Thu, 25 May 2006
14:15
Fisher Room

TBA

Simon Catterall
(Syracuse)
Thu, 25 May 2006

14:00 - 15:00
Rutherford Appleton Laboratory, nr Didcot

Algebraic updates of preconditioners for solving similar algebraic linear systems

Dr Mirek Tuma
(Institute of Computer Sciences)
Abstract

We consider the solution of sequences of linear systems by preconditioned iterative methods. Such systems arise, for example, in applications such as CFD and structural mechanics. In some cases it is important to avoid the recomputation of preconditioners for subsequent systems. We propose an algebraic strategy that replaces new preconditioners by old preconditioners with simple updates. Efficiency of the new strategy, which generalizes the approach of Benzi and Bertaccini, is demonstrated using numerical experiments.

This talk presents results of joint work with Jurjen Duintjer Tebbens.

Thu, 25 May 2006
12:00
SR1

TBA

George Raptis
(Oxford)
Mon, 22 May 2006
14:15
DH 3rd floor SR

Exotic couplings of Brownian motion

Prof Wilfrid Kendall
(University of Warwick)
Abstract

/notices/events/abstracts/stochastic-analysis/tt06/Kendall.shtml

Thu, 18 May 2006
16:15
Fisher Room

TBA

Marteen Golterman
(San Francisco State)